FLIR Si2a-LD Fixed-Mount Acoustic Imaging Camera for Pressurised Leak Detection
- Find Compressed Air and Gas Leaks Before They Drive Up Costs
Looking for a smarter way to monitor pressurised gas systems?
The FLIR Si2a-LD provides continuous monitoring for compressed air and pressurised gas leaks across industrial, manufacturing, and utility sites. This Fixed Acoustic Imaging solution helps maintenance teams locate leaks early, reduce energy waste, and support plant reliability.
Designed for permanent installation, the FLIR Si2a-LD works as a dedicated Fixed Gas Leak Camera. It combines AI-enhanced leak analysis, configurable alerts, and continuous 24/7 monitoring to help your team prioritise repairs.
Contact our team today for pricing, technical advice, or a product demonstration.
Why Choose the FLIR Si2a-LD?
The FLIR Si2a-LD helps you identify leaks before they become an ongoing source of wasted energy and unnecessary cost.
As a Fixed Acoustic Camera, it continuously listens for the sounds created by pressurised gas leaks. The system automatically detects and locates leaks, then estimates their size and annual cost to support maintenance decisions.
Permanent monitoring keeps watch on your assets between scheduled inspections, helping identify small or intermittent leaks that might otherwise go unnoticed.
Key Benefits
- 24/7 monitoring of compressed air and pressurised gas leaks
- AI-enhanced leak detection and analysis
- Estimated leak size and annual cost
- Configurable monitoring zones and alarm thresholds
- Helps reduce energy waste and operating costs
- Supports earlier maintenance intervention
- IP66-rated design for demanding environments
- Connectivity for existing plant monitoring systems
Continuous 24/7 monitoring in an IP66 rugged design
Fixed Acoustic Imaging for Continuous Monitoring
The FLIR Si2a-LD uses Fixed Acoustic Imaging technology to make the sound of escaping gas visible.
Using 124 low-noise MEMS microphones, the system creates real-time acoustic images of sound sources. This helps maintenance teams locate leaks in compressed air distribution networks, pneumatic equipment, and pressurised gas infrastructure.
The camera operates across a 2–130 kHz bandwidth and has a specified operating distance of 0.3–200 m. It combines acoustic measurement with a 12 MP colour camera and a 75° diagonal field of view.
Installed as a permanent Fixed Acoustic Camera, the FLIR Si2a-LD monitors selected equipment continuously, supporting earlier investigation when leaks develop.
Catch Small and Intermittent Pressurised Gas Leaks
Some leaks only appear when production loads or operating conditions change.
The FLIR Si2a-LD provides continuous Fixed Acoustic Imaging to help capture these intermittent losses. Its specified leak-rate detection thresholds are 0.0032 l/min at 2.5 m and 0.0044 l/min at 6 m.
Through the local web-based acoustic configurator, users can view the camera feed, define zones of interest, and set alarm thresholds for unattended monitoring.
Available alarm conditions include:
- Leak detection with a minimum leak size
- Leak detection with cost estimation
- Sound pressure level thresholds
These settings help focus attention on the areas and leak conditions that matter to your operation, supporting timely maintenance action.
Fixed Gas Leak Camera for Energy Savings
Compressed air and gas leaks waste resources and increase operating costs.
The FLIR Si2a-LD works as a dedicated Fixed Gas Leak Camera, helping facilities detect and locate leaks in pipework, valves, fittings, connections, and gas-powered equipment.
The camera can detect gases provided they are under sufficient pressure. For supported gases, it also estimates leak size and annual cost, helping maintenance teams prioritise repairs by their potential financial impact.
The FLIR Si2a-LD provides leak-rate cost estimates for:
- Compressed air
- Hydrogen
- Nitrogen
- Methane
- Natural gas
- Carbon dioxide
- Helium
- Argon
- Ammonia
By using a permanent Fixed Gas Leak Camera, organisations can identify avoidable losses and support a more efficient maintenance programme.
Built for Industrial Environments
The FLIR Si2a-LD is designed for demanding industrial monitoring applications.
This rugged Fixed Acoustic Camera features an IP66-rated enclosure and operates in temperatures from -20°C to 50°C. A 100 × 100 mm VESA mounting interface supports flexible installation.
Typical applications include:
- Compressed air distribution systems
- Pneumatic production equipment
- Manufacturing facilities
- Food and beverage processing plants
- Automotive, electronics, and pharmaceutical production
- Pressurised gas networks and plant utilities
- Power generation and process industry facilities
The FLIR Si2a-LD is intended for installation outside hazardous zones. For harsher or prolonged wet conditions, FLIR recommends a protective cover.
The camera uses Power over Ethernet (PoE+). Ethernet connectivity is standard, with a separate Wi-Fi model available for wireless data connectivity.
Simple Integration and Smart Alerts
The FLIR Si2a-LD provides connection options for SCADA, alarm, and wider condition-monitoring systems.
As a Fixed Acoustic Imaging platform, it supports:
- Ethernet connectivity and TCP/IP
- 2.4 GHz and 5 GHz Wi-Fi on the Wi-Fi model
- MQTT
- RTSP
- SMTP
- FTP
- HTTP and REST API access
- Digital inputs and outputs
- 4–20 mA current-loop output with discrete levels
Alarm triggers can be used with network event actions to notify teams when configured leak or sound pressure thresholds are met.
The local acoustic configurator can save .nlz measurement files for further analysis. FLIR lists compatibility with Thermal Studio and Acoustic Viewer, with Acoustic Viewer supporting report generation from these files.
Choose part number T912644 for the Wi-Fi model or T912646 for the model without Wi-Fi. Both require a PoE+ power connection.
FLIR Si2a-LD Key Specifications:
- 124 low-noise MEMS microphones
- Acoustic bandwidth: 2–130 kHz
- Operating distance: 0.3–200 m
- Leak-rate detection threshold: 0.0032 l/min at 2.5 m
- Leak-rate detection threshold: 0.0044 l/min at 6 m
- 12 MP colour camera
- 75° diagonal field of view
- Video streaming: 960 × 540 pixels at 15 fps
- Automatic leak recognition with estimated leak size and annual cost
- IP66 environmental protection
- Operating temperature: -20°C to 50°C
- PoE+ Type 2 power; 18 W typical and 25.5 W maximum consumption
- VESA mounting: 100 × 100 mm
- Camera dimensions: 182 × 171 × 79 mm
- Camera weight: approximately 1.4 kg
The leak-rate detection thresholds apply at the distances shown. Specifications are subject to change.
❓ Frequently Asked Questions (FAQ)
Q1: What is the FLIR Si2a-LD?
A. The FLIR Si2a-LD is a fixed-mount acoustic imaging camera for continuous detection and quantification of compressed air and pressurised gas leaks. It is designed for permanent industrial monitoring.
Q2: What does the Fixed Acoustic Camera detect?
A. The camera detects the sound produced by escaping pressurised gas and displays sound sources as acoustic images. FLIR specifies detection of all gases provided they are under sufficient pressure, with leak-rate cost estimation available for the supported gases listed above.
Q3: How does the FLIR Si2a-LD help prioritise repairs?
A. Automatic leak recognition provides estimated leak size and annual cost. Together with configurable zones and alarm thresholds, this helps maintenance teams identify leaks that need attention and assess their potential operating cost.
Q4: Where can the FLIR Si2a-LD be installed?
A. The camera is designed for industrial facilities, manufacturing plants, process sites, and utilities using compressed air or pressurised gases. It must be installed outside hazardous zones and within its specified operating conditions. FLIR recommends a protective cover for harsher or prolonged wet conditions.
Q5: How is the camera powered and connected?
A. The FLIR Si2a-LD uses PoE+ power and Ethernet connectivity. The T912644 model also supports 2.4 GHz and 5 GHz Wi-Fi, while T912646 is the version without Wi-Fi. A wireless data connection does not remove the need for a power connection.
Q6: What are the benefits of a Fixed Acoustic Camera compared to a handheld acoustic imager?
A. A Fixed Acoustic Camera provides continuous 24/7 monitoring between inspection rounds, helping detect small or intermittent leaks as operating conditions change. The Si2a-LD has no built-in display or battery; it uses a dedicated power supply and a local web-based configurator.
Request a Quote Today
Keep watch on costly leaks with the FLIR Si2a-LD.
Whether you need a Fixed Acoustic Imaging solution for compressed air systems or a Fixed Gas Leak Camera for pressurised gas networks, our specialists can help you find the right setup for your application.
Contact us today to discuss your requirements and request a quotation.